The following potential impacts to aquatic resources are usually identified in relation to major project activities (i.e., construction of bridge approaches and piers, removal of barge landing area, normal bridge operations):
• Alteration and loss of fish and benthos habitat as a result of the installation of the bridge
• Fish and benthos disturbance caused by the addition of fill, cofferdam construction, and the movement of equipment (sediment impacts to fish health)
• Restriction or blockage of fish passage
• Fish and benthos mortality and disturbance as a result of sediment release or chemical spills
The socioeconomic impact of a bridge construction is mostly positive across a broad range of the society levels. Some of the positive impacts are summarized below.
Local community. The construction and operational phase brings training and employment, opportunities for local business, and opportunities for joint ventures.
Public and consumers. Net saving in consumer goods and services and improved access and reduce isolation.
Truck industry. Reduced travel time and distance, improved scheduling and equipment utilization, and increased volumes.
Business. Lower overall cost for goods, reduced cost for alternative transport, and regional economic stimulus
The negative impact is mostly negative social impact during construction, due to nonresident workforce and increase in community income.
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